Dabbing brush for wool-combing machines



DABBING BRUSH FOR WOOL COMBING MACHINES Filed May 12, 1927 A TTOKNEDI vPatented Nov. 27, 1928.

UNI TE D S T A PATRICK HENRY, OF

PATENT 'OFFICE BRADFORD, ENGLAND.

DAZBBING BRUSH' FOR WOOL-COMBING MACHINES.

Application filed May 12, 1927, Serial No 190,729, and. infGreat BritainFebruary 25,1927.

Thisjinvention relates to improvementsin dabbing brushes used in combingW001. it has previously been PIOPOSQClKbY. me to eliminate from adabbing brush a portion of the bristling namely that which is overthetangentit'ormed by themeetingoi the large. and small circles oi aNoble comb, and to substitute such bristling by air pressure dab andthereby give increased length of life to the brush and efiectaneiiic-ient dab at orabout the said tangent point. Accordingto thepresent inventionI. combine with a dabbing brush having an air aperturedab, an arrangementot knite like devices arranged in the brush in suchwise that the said knives pass into, spaces between the rowsoi pins inthe large circle, and in that part ofthe brush which dabs on to neithercircle I discard most of the bristling and substitute what I term knifeguards. Furtherin order to prevent the splaying OlltsOI the usualbunches of bristles especially around the edges of the brush I providerows of short bristle as hereinafter more particularly described. Bythis means I form an eiiicient brush for its purpose with acomparatively long life, which also eifects a saving of time, with anincreased production of the machine, by reason of less stoppages tochange worn brushes for new ones, and by the elimination of neps andforeign matter from the top. There is also a saving as to stock ofbrushes required.

To carry out my invention and referring to the drawings which form partof the specification:

Fig. 1 represents a plan of the underside of a dabbing brush, andindicating the position of the two comb circles.

Fig. 2 represents a plan of the back of the brush.

Fig. 3 represents a section through the brush.

Fig. 4 represents a detail showing knives and supporting means. Fig. 5represents an end view of the brush and Fig. 6 represents details of amodified form of knife.

To apply air pressure dabbing means to a dabbing brush, that portion ofa dabbing brush which is immediately over the tangent of the two circlesC and C (Fig. 1) is not bristled, in a suitable form a hole H, Figs. 2and 3 is cut through the brush stock B and back B, and such aperture maybe square, circular, oval, or V shaped with by preferin a shapedsomewhat elongated narrow. nozzle'P, which when the brush int-lie. downposition will be clear of the top-of the pins of thecircles as inThe-brushbeing supported and dabbed by a suitable motion connectingto afoot or like, such as B 1101- I lowed out or cut away to permit thepipe? to pass, iihlSlOOt may takeany suitablelorm,

and is merely. indicated in Figs. 2 and 3. @By,

employing an air dab. at the areaimentioned an even and efficient dab isgiven to thewool,

and the tearing away of the bristle is eliminated and consequentlyrepairis not needed so often.

It will be noted that the air dab acts within an area surrounded bybristle with the exception of the part designated by H Fig. 1, here isonly a row of short, stilt, bristle A into which the point-s of thecircle pins only just enter. In place of a single jet I may employ aplurality of air jets.

There is always a tendency for the outer bristles to be forced somewhatout-wards and to limit this and stay or reinforce the bristling Icontinue the short stiff bristling entirely filOXIlCl the brush. Thisrow is designated It will be understood that there will be a tendencyfor some of the air delivered by the pipe P to creep into the brush, andI propose to utilize this pressure to assist in dabbing into the largecircle C, by mounting in the brush stock in lieu of bristle one or moreknives or the like K, which will just abut on a wall of the air dabaperture and will present guides or smooth faces along which the air maypass. These knives will be so mounted as to enter between rows of pinsin the large circles, and by usinga plurality of knives I can make themshort and comparatively straight, but I may use undivided knives formedto the curvature of the spaces between the pins.

It will be noted that the area of the brush marked D, Fig 1, if bristledwill serve no useful purposes. Therefore to the curvature of the largeand small circles I form by depending knives or metal combs K*, a Vwithin which the bristling may be omitted and the row A of stout shortbristle may be omitted across the opening of the V. Between the knives Kand the edges of the comb circle there will however be rows of bristle.This arrangement ensures the parting of the sliver as the circlesdiverge and the V prevents undue accumulation of wool in the area D.

The knives K are preferably provided with shoulders K which seat inrecesses cut for their reception in the stock B, which recessesterminate in slots for the blade portion K to pass. The knives may beplain as in Fig. 4 or comb-like as in Fig. 6 but there will always bepresented to the air current a plain face such as at or about the partK.

The action of the brush and the air pressure will give to the fibres thenecessary dab and the gathering action of bristle will be consid erablyreduced.

What I claim is 1. The combination with a dabbing brush provided with anair pressure dab at the tangent part of the two circles, of knivesmounted between bristling to dab into the large circle, said knivesacting as guides for the surplus air to distribute same over a largerarea of the dabbing brush.

2. The combination with a dabbing brush provided with an air pressuredab at the tangent part of the two circles of knives mounted betweenbristling to dab into the large circle and a V shaped knife like fitting'on that part of the brush which lies over the diverging space betweenthe two circles.

3. The combination with a dabbing brush provided with an air pressuredab at the tangent part of the two circles, of an aperture around theair pressure supplying pipe, said aperture being surrounded by bristleon three sides, and on the other side by a row or rows of short, stoutbristle, to eliminate the excessive escape of air, and tend to force airinto other parts of the brush. 4:. The combination with a dabbing brushprovided with an air pressure dab at the tangent part of the twocircles, of knives mounted between bristling, said knives being adaptedto dab into the large circle, the bristling of the brush beingreinforced around its edges with a. row or rows of short, stout bristle.5. A dabbing brush having an air pressure dab operating in an unbristledportion of the brush over the tangent of the two circles, provided withguide and dabbing knives communicating at one end with the air pressuredab chamber. V In testimony whereof I have signed my name to thisspecification.

PATRICK HENRY.

